Directory traversal vulnerability in Yet another Bulletin Board (YaBB) 2.1 and earlier allows remote authenticated users to execute arbitrary Perl code via a .
Published Jun 20, 2007
6.5
MEDIUMCVSS 2.0
EPSS 1.42%
Description
Directory traversal vulnerability in Yet another Bulletin Board (YaBB) 2.1 and earlier allows remote authenticated users to execute arbitrary Perl code via a .. (dot dot) in the userlanguage profile setting, which sets the userlanguage key of the member hash, and is propagated to the language variable in (1) HelpCentre.pl and (2) ICQPager.pl, (3) the use_lang variable in Subs.pl, and the actlang variable in (4) Post.pl and (5) InstantMessage.pl; as demonstrated by pointing userlanguage to the English folder, modifying English/HelpCentre.lng file to contain Perl statements, and then invoking the help action in YaBB.pl.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.42% (0.01419) | 71.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.42% (0.01419) | 69.23th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.36% (0.01358) | 78.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.54% (0.00544) | 78.14th | v3 (v2023.03.01) |
| May 31, 2024 | 0.54% (0.00544) | 77.35th | v3 (v2023.03.01) |
| Apr 23, 2024 | 0.59% (0.00592) | 78.08th | v3 (v2023.03.01) |
| Mar 16, 2024 | 0.58% (0.00578) | 77.55th | v3 (v2023.03.01) |
| Feb 7, 2024 | 0.58% (0.00585) | 75.87th | v3 (v2023.03.01) |
| Nov 22, 2023 | 0.52% (0.00517) | 74.11th | v3 (v2023.03.01) |
| Jun 26, 2023 | 0.72% (0.00718) | 77.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.66% (0.00664) | 76.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.23% (0.01232) | 67.28th | v2 (v2022.01.01) |
| Dec 23, 2022 | 1.23% (0.01232) | 66.86th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.23% (0.01232) | 64.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.23% (0.01232) | 41.02th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://osvdb.org/37238 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/25734 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/2818 third-party-advisoryx_refsource_SREASON
- http://www.securityfocus.com/archive/1/471733/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/24529 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34932 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/37238 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/25734 | third-party-advisoryx_refsource_SECUNIA | |
| http://securityreason.com/securityalert/2818 | third-party-advisoryx_refsource_SREASON | |
| http://www.securityfocus.com/archive/1/471733/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/24529 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/34932 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.